Transducers keep track of effluent
A
Pulsar Process Measurement product story
Edited by the Engineeringtalk editorial team
May 9, 2003
Pulsar's new dB3 transducer has been used in the newly installed effluent treatment plant at Saint-Gobain Abrasives in Gloucester.
Pulsar's new dB3 transducer has been used in the newly installed effluent treatment plant at Saint-Gobain Abrasives in Gloucester.
Analytical Technical Services, the main contractor, was attracted by the dB3's high resolution and exceptionally short blanking distance of 125mm.
The effluent treatment process consists of three elements.
Process flows are fed to a floor sump which are then pumped to a treatment unit and finally to a conical vessel for discharge.
The level of the floor sump tank is measured using a Pulsar Vantage 100 ultrasonic controller with the dB3 transducer providing the signals.
It is important to transfer an exact volume of effluent from the floor sump, and so the Vantage unit calculates the volume of effluent from the dimensions of the tank.
Once the effluent volume is pumped to the treatment vessel the level is controlled using a Pulsar Advanced 120, again with a dB3 transducer.
The treated effluent is discharged to the conical discharge vessel and the cycle restarts.
An additional complication is that there are times when the process flow may be continuous.
The Advanced and Vantage units are set up so that a high level in the treatment vessel will inhibit pumping from the sump to avoid overloading of the system and ensuring that the effluent is properly treated at all times.
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